Mason Marcks Forsythe 2 dam
Mason Marcks Forsythe 2
Mason Marcks Forsythe 2 is a private dam located in Pepin, Wisconsin, designed by the USDA NRCS and regulated by the Wisconsin Department of Natural Resources. Completed in 1978, this gravity dam stands at 26 feet tall with a length of 233 feet, serving primarily for flood risk reduction along the Tributary Little Plum Creek. With a storage capacity of 50 acre-feet and a maximum discharge of 120 cubic feet per second, this structure plays a crucial role in mitigating potential hazards in the area.
Despite being classified with a low hazard potential, Mason Marcks Forsythe 2 is considered to have a moderate risk level, emphasizing the importance of ongoing risk management measures. The dam has not been rated for its condition assessment, and the last inspection was conducted in December 2020 with a frequency of every 10 years. While the Emergency Action Plan status and other related guidelines are not specified, the dam's location and purpose signify its significant role in safeguarding the surrounding community and environment from potential flooding events, making it a crucial asset in water resource and climate management efforts in the region.
Dam data reference
Condition Assessment
- Satisfactory
- No existing or potential dam safety deficiencies are recognized. Acceptable performance is expected under all loading conditions (static, hydrologic, seismic) in accordance with the minimum applicable state or federal regulatory criteria or tolerable risk guidelines.
- Fair
- No existing dam safety deficiencies are recognized for normal operating conditions. Rare or extreme hydrologic and/or seismic events may result in a dam safety deficiency. Risk may be in the range to take further action.
- Poor
- A dam safety deficiency is recognized for normal operating conditions which may realistically occur. Remedial action is necessary. POOR may also be used when uncertainties exist as to critical analysis parameters which identify a potential dam safety deficiency.
- Unsatisfactory
- A dam safety deficiency is recognized that requires immediate or emergency remedial action for problem resolution.
- Not Rated
- The dam has not been inspected, is not under state or federal jurisdiction, or has been inspected but, for whatever reason, has not been rated.
Hazard Potential Classification
- High
- Dams assigned the high hazard potential classification are those where failure or mis-operation will probably cause loss of human life.
- Significant
- Dams assigned the significant hazard potential classification are those dams where failure or mis-operation results in no probable loss of human life but can cause economic loss, environmental damage, disruption of lifeline facilities, or impact other concerns. Significant hazard potential classification dams are often located in predominantly rural or agricultural areas but could be in areas with population and significant infrastructure.
- Low
- Dams assigned the low hazard potential classification are those where failure or mis-operation results in no probable loss of human life and low economic and/or environmental losses. Losses are principally limited to the owner's property.
- Undetermined
- Dams for which a downstream hazard potential has not been designated or is not provided.
Plan around the weather
Same NOAA / yr.no feed Snoflo's iOS app uses. Watch the precipitation column on the meteogram -- rain on the basin upstream typically lifts inflow 24-72 hours later.
Next 5 days, hour by hour
Temperature line with weather symbols on top, snow + rain accumulation as columns, humidity as a dotted line.
5-day forecast table
Every 3 hours, broken out across temperature, snow, rain, humidity, and wind. Each cell is colour-coded relative to the column min/max.
| Time | Condition | Temp (°F) | Snow (in) | Rain (in) | Humidity (%) | Wind (mps) | Wind dir |
|---|---|---|---|---|---|---|---|
| Loading detailed forecast… | |||||||
15-day temperature & precipitation
Daily temperatures, snow, and rain projected over the next two weeks.
Nearby streamflow gauges
USGS streamgauges around Mason Marcks Forsythe 2 -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Chippewa River At Durand | 5,070 cfs | → |
| Zumbro River At Kellogg | 1,550 cfs | → |
| Mississippi River At Red Wing | 19,000 cfs | → |
| Eau Galle River At Spring Valley | 17 cfs | → |
| Red Cedar River At Menomonie | 1,010 cfs | → |
| Cannon River At Welch | 375 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Mason Marcks Forsythe 2.
Boat launches
- Chippewa River -- Ella Boat Landing
- Mississippi River -- Deer Island Landing
- Mississippi River -- Pepin Town Landing
- Dead Lake -- Access
- Mississippi River -- Stockholm
- Chippewa River -- Access
Campgrounds
- Lake Pepin Campground
- Stockholm Village Park
- Holden Park Campground
- Hok-Si-La Park Campground
- Frontenac State Park Cart-In
- Nugget Lake County Park
Fishing spots
Track Mason Marcks Forsythe 2 in the Snoflo app
Save this dam as a favorite and get the local NOAA / yr.no forecast plus regional flow context wherever you are.
About Mason Marcks Forsythe 2
Where does the data for Mason Marcks Forsythe 2 come from?
Structural and regulatory data come from the U.S. Army Corps of Engineers' National Inventory of Dams (NID). Weather forecast comes from NOAA / yr.no -- the same feed Snoflo's iOS app uses.
How often is the report updated?
NID structural data refreshes annually as the Corps publishes updated assessments. The weather forecast refreshes throughout the day.
What does the Low hazard rating mean?
The Corps of Engineers' hazard potential classification grades probable consequences if the dam fails: High = probable loss of human life; Significant = no probable loss of human life but possible economic loss / environmental damage; Low = no probable loss of human life, only minor economic / environmental losses. See the Dam Data Reference card above for the full definitions.
What's "% of normal"?
The current storage value compared to the historical average storage on this calendar day. 100% = right on average; values above 100% mean above-normal storage (wet year); values below mean below-normal (dry year or drought).
Can I get alerts when storage crosses a threshold?
Yes -- alerts are managed in the Snoflo iOS app. Favorite this dam, set a threshold, and you'll get a push the moment conditions cross.
Other water bodies near here
Snoflo-tracked reservoirs and dams within driving distance of Mason Marcks Forsythe 2.